Soap bar



FIG. 1 is a perspective view of the soap bar of my design;

FIG. 2 is a front elevation view thereof, the rear elevation view being a mirror image thereof.

FIG. 3 is a right side elevation view thereof, the left side elevation view being a mirror image thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a soap bar, as shown and described. 